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LAMMPS (27 Mar 2011)
# Pure Cu crystal, structure created by LAMMPS, qeq off
units metal
atom_style charge
dimension 3
boundary p p p
lattice fcc 3.615
Lattice spacing in x,y,z = 3.615 3.615 3.615
region box block 0 4 0 4 0 4
create_box 1 box
Created orthogonal box = (0 0 0) to (14.46 14.46 14.46)
1 by 1 by 1 processor grid
create_atoms 1 box
Created 256 atoms
mass 1 63.54
pair_style comb
pair_coeff * * ffield.comb Cu
neighbor 0.5 bin
neigh_modify every 1 delay 1 check yes
#dump 1 all custom 10 tmp.dump id type xs ys zs q vx vy vz fx fy fz
#dump_modify 1 append yes element Cu
fix 1 all nve
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul press vol lx ly lz xz
thermo_modify norm yes
velocity all create 10.1 2398378
thermo 1
run 10
Memory usage per processor = 2.80471 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul Press Volume Lx Ly Lz Xz
0 10.1 -3.5063151 -3.5076155 -3.5076155 0 27.496055 3023.4645 14.46 14.46 14.46 0
1 10.099643 -3.5063151 -3.5076155 -3.5076155 0 27.512983 3023.4645 14.46 14.46 14.46 0
2 10.098572 -3.5063151 -3.5076153 -3.5076153 0 27.563765 3023.4645 14.46 14.46 14.46 0
3 10.096788 -3.5063151 -3.5076151 -3.5076151 0 27.64839 3023.4645 14.46 14.46 14.46 0
4 10.094291 -3.5063151 -3.5076148 -3.5076148 0 27.766843 3023.4645 14.46 14.46 14.46 0
5 10.09108 -3.5063151 -3.5076144 -3.5076144 0 27.919101 3023.4645 14.46 14.46 14.46 0
6 10.087158 -3.5063151 -3.5076139 -3.5076139 0 28.105138 3023.4645 14.46 14.46 14.46 0
7 10.082524 -3.5063151 -3.5076133 -3.5076133 0 28.324919 3023.4645 14.46 14.46 14.46 0
8 10.077179 -3.5063151 -3.5076126 -3.5076126 0 28.578403 3023.4645 14.46 14.46 14.46 0
9 10.071123 -3.5063151 -3.5076118 -3.5076118 0 28.865545 3023.4645 14.46 14.46 14.46 0
10 10.06436 -3.5063151 -3.5076109 -3.5076109 0 29.186292 3023.4645 14.46 14.46 14.46 0
Loop time of 0.802534 on 1 procs for 10 steps with 256 atoms
Pair time (%) = 0.80151 (99.8723)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000503063 (0.0626843)
Outpt time (%) = 0.000286579 (0.0357093)
Other time (%) = 0.000234842 (0.0292626)
Nlocal: 256 ave 256 max 256 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4375 ave 4375 max 4375 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 172544 ave 172544 max 172544 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 172544
Ave neighs/atom = 674
Neighbor list builds = 0
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# Pure Cu crystal, structure created by LAMMPS, qeq off
units metal
atom_style charge
dimension 3
boundary p p p
lattice fcc 3.615
Lattice spacing in x,y,z = 3.615 3.615 3.615
region box block 0 4 0 4 0 4
create_box 1 box
Created orthogonal box = (0 0 0) to (14.46 14.46 14.46)
1 by 2 by 2 processor grid
create_atoms 1 box
Created 256 atoms
mass 1 63.54
pair_style comb
pair_coeff * * ffield.comb Cu
neighbor 0.5 bin
neigh_modify every 1 delay 1 check yes
#dump 1 all custom 10 tmp.dump id type xs ys zs q vx vy vz fx fy fz
#dump_modify 1 append yes element Cu
fix 1 all nve
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul press vol lx ly lz xz
thermo_modify norm yes
velocity all create 10.1 2398378
thermo 1
run 10
Memory usage per processor = 2.29838 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul Press Volume Lx Ly Lz Xz
0 10.1 -3.5063151 -3.5076155 -3.5076155 0 27.496055 3023.4645 14.46 14.46 14.46 0
1 10.099638 -3.5063151 -3.5076155 -3.5076155 0 27.513531 3023.4645 14.46 14.46 14.46 0
2 10.098553 -3.5063151 -3.5076153 -3.5076153 0 27.565957 3023.4645 14.46 14.46 14.46 0
3 10.096744 -3.5063151 -3.5076151 -3.5076151 0 27.653322 3023.4645 14.46 14.46 14.46 0
4 10.094212 -3.5063151 -3.5076148 -3.5076148 0 27.775611 3023.4645 14.46 14.46 14.46 0
5 10.090958 -3.5063151 -3.5076144 -3.5076144 0 27.932801 3023.4645 14.46 14.46 14.46 0
6 10.086981 -3.5063151 -3.5076139 -3.5076139 0 28.124863 3023.4645 14.46 14.46 14.46 0
7 10.082283 -3.5063151 -3.5076132 -3.5076132 0 28.351761 3023.4645 14.46 14.46 14.46 0
8 10.076864 -3.5063151 -3.5076125 -3.5076125 0 28.613454 3023.4645 14.46 14.46 14.46 0
9 10.070725 -3.5063151 -3.5076118 -3.5076118 0 28.909893 3023.4645 14.46 14.46 14.46 0
10 10.063868 -3.5063151 -3.5076109 -3.5076109 0 29.241022 3023.4645 14.46 14.46 14.46 0
Loop time of 0.202334 on 4 procs for 10 steps with 256 atoms
Pair time (%) = 0.197941 (97.8289)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0038377 (1.89672)
Outpt time (%) = 0.000359058 (0.177458)
Other time (%) = 0.000196099 (0.0969187)
Nlocal: 64 ave 64 max 64 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Nghost: 2971 ave 2971 max 2971 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 43136 ave 43136 max 43136 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 172544
Ave neighs/atom = 674
Neighbor list builds = 0
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# Cu2O crystal, qeq on, minimizes, then calculates elastic constants
units metal
atom_style charge
dimension 3
boundary p p p
read_data data.Cu2O
triclinic box = (0 0 0) to (25.62 25.62 25.62) with tilt (0 0 0)
1 by 1 by 1 processor grid
1296 atoms
mass 1 63.54
group type1 type 1
864 atoms in group type1
compute charge1 type1 property/atom q
compute q1 type1 reduce ave c_charge1
mass 2 16.00
group type2 type 2
432 atoms in group type2
compute charge2 type2 property/atom q
compute q2 type2 reduce ave c_charge2
velocity all create 1.0 277387
pair_style comb
pair_coeff * * ffield.comb Cu O
neighbor 0.5 bin
neigh_modify every 20 delay 0 check no
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul c_q1 c_q2 lx ly lz vol
thermo_modify norm yes
thermo 1
fix 1 all nve
fix 2 all qeq/comb 1 0.0001
#dump 1 all cfg 1 *.cfg id type xs ys zs q f_2 vx vy vz fx fy fz
#dump_modify 1 element Cu O
run 2
Memory usage per processor = 5.54555 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul q1 q2 Lx Ly Lz Volume
0 1 -3.8383547 -3.8384838 -1.1478494 -2.6906344 0.72421193 -1.4484239 25.62 25.62 25.62 16816.568
1 0.99888668 -3.8382371 -3.8383662 -0.98185761 -2.8565085 0.72421093 -1.4484219 25.62 25.62 25.62 16816.568
2 0.99630957 -3.8382376 -3.8383663 -0.98186477 -2.8565015 0.7242097 -1.4484194 25.62 25.62 25.62 16816.568
Loop time of 2.50572 on 1 procs for 2 steps with 1296 atoms
Pair time (%) = 0.309569 (12.3545)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000235319 (0.00939126)
Outpt time (%) = 0.000140905 (0.00562334)
Other time (%) = 2.19578 (87.6305)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
unfix 1
fix 1 all box/relax aniso 0.0 vmax 0.001
minimize 1.0e-14 1.0e-20 1000 10000
WARNING: Resetting reneighboring criteria during minimization
Memory usage per processor = 6.84256 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul q1 q2 Lx Ly Lz Volume
2 0.99630957 -3.845015 -3.8451437 -0.97307269 -2.872071 0.7242097 -1.4484194 25.62 25.62 25.62 16816.568
3 0.99630957 -3.8450358 -3.8451645 -0.96977625 -2.8753882 0.7242097 -1.4484194 25.59438 25.594381 25.59438 16766.17
4 0.99630957 -3.8450358 -3.8451645 -0.96977625 -2.8753882 0.7242097 -1.4484194 25.59438 25.594381 25.59438 16766.17
Loop time of 2.3633 on 1 procs for 2 steps with 1296 atoms
Minimization stats:
Stopping criterion = linesearch alpha is zero
Energy initial, next-to-last, final =
-3.8451437267 -3.84516448476 -3.84516448476
Force two-norm initial, final = 14.0243 26.0587
Force max component initial, final = 8.07088 15.0312
Final line search alpha, max atom move = 1.62423e-08 2.44141e-07
Iterations, force evaluations = 2 14
Pair time (%) = 2.35645 (99.7102)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00155354 (0.0657359)
Outpt time (%) = 6.8903e-05 (0.00291554)
Other time (%) = 0.00522709 (0.221178)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
min_modify dmax 0.2 line quadratic
unfix 1
fix 1 all nve
run 1
Memory usage per processor = 5.7222 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul q1 q2 Lx Ly Lz Volume
4 0.99630957 -3.8450358 -3.8451645 -0.96977625 -2.8753882 0.72227767 -1.4445553 25.59438 25.594381 25.59438 16766.17
5 0.99306642 -3.8417608 -3.8418891 -0.98316073 -2.8587283 0.7222782 -1.4445564 25.59438 25.594381 25.59438 16766.17
Loop time of 1.11878 on 1 procs for 1 steps with 1296 atoms
Pair time (%) = 0.159516 (14.258)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000136137 (0.0121683)
Outpt time (%) = 8.70228e-05 (0.00777836)
Other time (%) = 0.959042 (85.722)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
unfix 1
unfix 2
#undump 1
### copy lines after this to any input script for elastic calculations ###
## Elastic constants calculations: strain box, measure box stress
## strain x, measure s_x, s_y, s_z, s_yz:
## calculates C11, C12, C13 and C14
fix 2 all deform 1 x scale 1.0001 remap x
compute perfx all stress/atom pair
compute fx all reduce sum c_perfx[1] c_perfx[2] c_perfx[3] c_perfx[4] c_perfx[5] c_perfx[6]
thermo_style custom step lx ly lz xy xz yz c_fx[1] c_fx[2] c_fx[3] c_fx[4] c_fx[5] c_fx[6]
WARNING: New thermo_style command, previous thermo_modify settings will be lost
run 10
Memory usage per processor = 5.98075 Mbytes
Step Lx Ly Lz Xy Xz Yz fx[1] fx[2] fx[3] fx[4] fx[5] fx[6]
5 25.59438 25.594381 25.59438 0 0 0 -23857347 -23854274 -23856348 -44222.028 -67044.325 -59938.384
6 25.594636 25.594381 25.59438 0 0 0 -23857347 -23854274 -23856348 -44222.028 -67044.325 -59938.384
7 25.594892 25.594381 25.59438 0 0 0 -23528290 -23833303 -23835377 -44220.96 -67042.938 -59932.976
8 25.595148 25.594381 25.59438 0 0 0 -23199233 -23812337 -23814412 -44219.892 -67041.552 -59927.569
9 25.595404 25.594381 25.59438 0 0 0 -22870176 -23791377 -23793451 -44218.824 -67040.166 -59922.162
10 25.59566 25.594381 25.59438 0 0 0 -22541119 -23770422 -23772497 -44217.757 -67038.78 -59916.756
11 25.595916 25.594381 25.59438 0 0 0 -22212062 -23749473 -23751547 -44216.69 -67037.395 -59911.349
12 25.596172 25.594381 25.59438 0 0 0 -21883006 -23728529 -23730604 -44215.624 -67036.01 -59905.943
13 25.596428 25.594381 25.59438 0 0 0 -21553950 -23707591 -23709665 -44214.559 -67034.624 -59900.537
14 25.596684 25.594381 25.59438 0 0 0 -21224894 -23686658 -23688732 -44213.493 -67033.238 -59895.132
15 25.59694 25.594381 25.59438 0 0 0 -20895838 -23665731 -23667805 -44212.427 -67031.853 -59889.727
Loop time of 1.73011 on 1 procs for 10 steps with 1296 atoms
Pair time (%) = 1.72171 (99.5144)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0015142 (0.0875201)
Outpt time (%) = 0.00608492 (0.351706)
Other time (%) = 0.000802755 (0.046399)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
## strain z, measure s_z: calculates C33
fix 2 all deform 1 z scale 1.0001 remap x
compute perfz all stress/atom pair
compute fz all reduce sum c_perfz[1] c_perfz[2] c_perfz[3] c_perfz[4] c_perfz[5] c_perfz[6]
thermo_style custom step lx ly lz xy xz yz c_fz[1] c_fz[2] c_fz[3] c_fz[4] c_fz[5] c_fz[6]
run 10
Memory usage per processor = 6.49784 Mbytes
Step Lx Ly Lz Xy Xz Yz fz[1] fz[2] fz[3] fz[4] fz[5] fz[6]
15 25.59694 25.594381 25.59438 0 0 0 -20566782 -23644809 -23646883 -44211.362 -67030.467 -59884.323
16 25.59694 25.594381 25.594636 0 0 0 -20566782 -23644809 -23646883 -44211.362 -67030.467 -59884.323
17 25.59694 25.594381 25.594892 0 0 0 -20545864 -23623833 -23317879 -44205.686 -67029.08 -59883.21
18 25.59694 25.594381 25.595148 0 0 0 -20524951 -23602862 -22988874 -44200.011 -67027.694 -59882.097
19 25.59694 25.594381 25.595404 0 0 0 -20504043 -23581897 -22659870 -44194.336 -67026.307 -59880.984
20 25.59694 25.594381 25.59566 0 0 0 -20483141 -23560937 -22330866 -44188.661 -67024.921 -59879.872
21 25.59694 25.594381 25.595916 0 0 0 -20462244 -23539983 -22001862 -44182.986 -67023.535 -59878.76
22 25.59694 25.594381 25.596172 0 0 0 -20441353 -23519034 -21672859 -44177.311 -67022.148 -59877.647
23 25.59694 25.594381 25.596428 0 0 0 -20420468 -23498091 -21343855 -44171.636 -67020.762 -59876.536
24 25.59694 25.594381 25.596683 0 0 0 -20399588 -23477153 -21014852 -44165.962 -67019.375 -59875.424
25 25.59694 25.594381 25.596939 0 0 0 -20378713 -23456221 -20685849 -44160.287 -67017.989 -59874.312
Loop time of 1.72041 on 1 procs for 10 steps with 1296 atoms
Pair time (%) = 1.71271 (99.5523)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00122261 (0.0710651)
Outpt time (%) = 0.00582957 (0.338848)
Other time (%) = 0.000650644 (0.0378192)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
## strain yz, measure s_yz: calculates C44
fix 2 all deform 1 yz erate 0.0001 remap x
compute perfyz all stress/atom pair
compute fyz all reduce sum c_perfyz[1] c_perfyz[2] c_perfyz[3] c_perfyz[4] c_perfyz[5] c_perfyz[6]
thermo_style custom step lx ly lz xy xz yz c_fyz[1] c_fyz[2] c_fyz[3] c_fyz[4] c_fyz[5] c_fyz[6]
run 10
Memory usage per processor = 7.01493 Mbytes
Step Lx Ly Lz Xy Xz Yz fyz[1] fyz[2] fyz[3] fyz[4] fyz[5] fyz[6]
25 25.59694 25.594381 25.596939 0 0 0 -20357844 -23435294 -20356846 -44154.613 -67016.603 -59873.2
26 25.59694 25.594381 25.596939 0 0 5.1193879e-07 -20357844 -23435294 -20356846 -44154.613 -67016.603 -59873.2
27 25.59694 25.594381 25.596939 0 0 1.0238776e-06 -20357844 -23435294 -20356846 -44154.607 -67016.597 -59608.802
28 25.59694 25.594381 25.596939 0 0 1.5358164e-06 -20357844 -23435294 -20356846 -44154.601 -67016.592 -59344.404
29 25.59694 25.594381 25.596939 0 0 2.0477552e-06 -20357844 -23435294 -20356846 -44154.595 -67016.586 -59080.005
30 25.59694 25.594381 25.596939 0 0 2.5596939e-06 -20357844 -23435294 -20356846 -44154.589 -67016.58 -58815.607
31 25.59694 25.594381 25.596939 0 0 3.0716327e-06 -20357844 -23435294 -20356845 -44154.583 -67016.575 -58551.209
32 25.59694 25.594381 25.596939 0 0 3.5835715e-06 -20357844 -23435294 -20356845 -44154.577 -67016.569 -58286.811
33 25.59694 25.594381 25.596939 0 0 4.0955103e-06 -20357844 -23435294 -20356845 -44154.571 -67016.563 -58022.413
34 25.59694 25.594381 25.596939 0 0 4.6074491e-06 -20357844 -23435294 -20356845 -44154.565 -67016.558 -57758.014
35 25.59694 25.594381 25.596939 0 0 5.1193879e-06 -20357844 -23435294 -20356845 -44154.559 -67016.552 -57493.616
Loop time of 1.71669 on 1 procs for 10 steps with 1296 atoms
Pair time (%) = 1.70907 (99.5561)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00118637 (0.0691079)
Outpt time (%) = 0.00573516 (0.334082)
Other time (%) = 0.000698328 (0.0406787)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
## strain xy, measure s_xy: calculates C66
fix 2 all deform 1 xy erate 0.0001 remap x
compute perfxy all stress/atom pair
compute fxy all reduce sum c_perfxy[1] c_perfxy[2] c_perfxy[3] c_perfxy[4] c_perfxy[5] c_perfxy[6]
thermo_style custom step lx ly lz xy xz yz c_fxy[1] c_fxy[2] c_fxy[3] c_fxy[4] c_fxy[5] c_fxy[6]
run 10
Memory usage per processor = 7.53202 Mbytes
Step Lx Ly Lz Xy Xz Yz fxy[1] fxy[2] fxy[3] fxy[4] fxy[5] fxy[6]
35 25.59694 25.594381 25.596939 0 0 5.1193879e-06 -20357844 -23435294 -20356845 -44154.553 -67016.546 -57229.218
36 25.59694 25.594381 25.596939 5.1188761e-07 0 5.1193879e-06 -20357844 -23435294 -20356845 -44154.553 -67016.546 -57229.218
37 25.59694 25.594381 25.596939 1.0237752e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -43890.216 -67016.542 -57229.211
38 25.59694 25.594381 25.596939 1.5356628e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -43625.88 -67016.537 -57229.203
39 25.59694 25.594381 25.596939 2.0475505e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -43361.543 -67016.533 -57229.196
40 25.59694 25.594381 25.596939 2.5594381e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -43097.206 -67016.528 -57229.189
41 25.59694 25.594381 25.596939 3.0713257e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -42832.87 -67016.523 -57229.181
42 25.59694 25.594381 25.596939 3.5832133e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -42568.533 -67016.519 -57229.174
43 25.59694 25.594381 25.596939 4.0951009e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -42304.196 -67016.514 -57229.167
44 25.59694 25.594381 25.596939 4.6069885e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -42039.86 -67016.51 -57229.159
45 25.59694 25.594381 25.596939 5.1188761e-06 0 5.1193879e-06 -20357844 -23435294 -20356845 -41775.523 -67016.505 -57229.152
Loop time of 1.7178 on 1 procs for 10 steps with 1296 atoms
Pair time (%) = 1.71014 (99.5539)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00127482 (0.0742126)
Outpt time (%) = 0.00568557 (0.33098)
Other time (%) = 0.000703096 (0.0409301)
Nlocal: 1296 ave 1296 max 1296 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 8243 ave 8243 max 8243 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 810432 ave 810432 max 810432 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0

315
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LAMMPS (27 Mar 2011)
# Cu2O crystal, qeq on, minimizes, then calculates elastic constants
units metal
atom_style charge
dimension 3
boundary p p p
read_data data.Cu2O
triclinic box = (0 0 0) to (25.62 25.62 25.62) with tilt (0 0 0)
1 by 2 by 2 processor grid
1296 atoms
mass 1 63.54
group type1 type 1
864 atoms in group type1
compute charge1 type1 property/atom q
compute q1 type1 reduce ave c_charge1
mass 2 16.00
group type2 type 2
432 atoms in group type2
compute charge2 type2 property/atom q
compute q2 type2 reduce ave c_charge2
velocity all create 1.0 277387
pair_style comb
pair_coeff * * ffield.comb Cu O
neighbor 0.5 bin
neigh_modify every 20 delay 0 check no
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul c_q1 c_q2 lx ly lz vol
thermo_modify norm yes
thermo 1
fix 1 all nve
fix 2 all qeq/comb 1 0.0001
#dump 1 all cfg 1 *.cfg id type xs ys zs q f_2 vx vy vz fx fy fz
#dump_modify 1 element Cu O
run 2
Memory usage per processor = 2.98849 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul q1 q2 Lx Ly Lz Volume
0 1 -3.8383547 -3.8384838 -1.1478494 -2.6906344 0.7250204 -1.4500408 25.62 25.62 25.62 16816.568
1 0.99832063 -3.8339963 -3.8341252 -0.98121146 -2.8529137 0.72501959 -1.4500392 25.62 25.62 25.62 16816.568
2 0.99477315 -3.8339968 -3.8341253 -0.98121736 -2.8529079 0.72501849 -1.450037 25.62 25.62 25.62 16816.568
Loop time of 0.649422 on 4 procs for 2 steps with 1296 atoms
Pair time (%) = 0.0756464 (11.6483)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00136131 (0.209619)
Outpt time (%) = 0.000139356 (0.0214584)
Other time (%) = 0.572275 (88.1207)
Nlocal: 324 ave 324 max 324 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Nghost: 4943 ave 4943 max 4943 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 202608 max 202608 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
unfix 1
fix 1 all box/relax aniso 0.0 vmax 0.001
minimize 1.0e-14 1.0e-20 1000 10000
WARNING: Resetting reneighboring criteria during minimization
Memory usage per processor = 4.17364 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul q1 q2 Lx Ly Lz Volume
2 0.99477315 -3.8448334 -3.8449619 -0.96671781 -2.8782441 0.72501849 -1.450037 25.62 25.62 25.62 16816.568
3 0.99477315 -3.8448541 -3.8449826 -0.96342109 -2.8815615 0.72501849 -1.450037 25.594519 25.594381 25.59438 16766.261
4 0.99477315 -3.8448541 -3.8449826 -0.96342109 -2.8815615 0.72501849 -1.450037 25.594519 25.594381 25.59438 16766.261
Loop time of 0.600445 on 4 procs for 2 steps with 1296 atoms
Minimization stats:
Stopping criterion = linesearch alpha is zero
Energy initial, next-to-last, final =
-3.8449619337 -3.84498261759 -3.84498261759
Force two-norm initial, final = 13.89 26.1585
Force max component initial, final = 7.99462 15.1024
Final line search alpha, max atom move = 1.61657e-08 2.44141e-07
Iterations, force evaluations = 2 14
Pair time (%) = 0.58064 (96.7016)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0166085 (2.76603)
Outpt time (%) = 5.75781e-05 (0.00958924)
Other time (%) = 0.00313872 (0.522733)
Nlocal: 324 ave 331 max 321 min
Histogram: 1 2 0 0 0 0 0 0 0 1
Nghost: 4943 ave 4946 max 4936 min
Histogram: 1 0 0 0 0 0 0 0 0 3
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 207074 max 200694 min
Histogram: 1 2 0 0 0 0 0 0 0 1
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
min_modify dmax 0.2 line quadratic
unfix 1
fix 1 all nve
run 1
Memory usage per processor = 3.14651 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul q1 q2 Lx Ly Lz Volume
4 0.99477315 -3.8448541 -3.8449826 -0.96342109 -2.8815615 0.7219669 -1.4439338 25.594519 25.594381 25.59438 16766.261
5 0.99149942 -3.839274 -3.839402 -0.9840769 -2.8553251 0.72196775 -1.4439355 25.594519 25.594381 25.59438 16766.261
Loop time of 0.308691 on 4 procs for 1 steps with 1296 atoms
Pair time (%) = 0.038758 (12.5556)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00141472 (0.458295)
Outpt time (%) = 7.1466e-05 (0.0231513)
Other time (%) = 0.268447 (86.963)
Nlocal: 324 ave 333 max 320 min
Histogram: 2 0 1 0 0 0 0 0 0 1
Nghost: 4943 ave 4947 max 4934 min
Histogram: 1 0 0 0 0 0 0 1 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 208350 max 200056 min
Histogram: 2 0 1 0 0 0 0 0 0 1
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
unfix 1
unfix 2
#undump 1
### copy lines after this to any input script for elastic calculations ###
## Elastic constants calculations: strain box, measure box stress
## strain x, measure s_x, s_y, s_z, s_yz:
## calculates C11, C12, C13 and C14
fix 2 all deform 1 x scale 1.0001 remap x
compute perfx all stress/atom pair
compute fx all reduce sum c_perfx[1] c_perfx[2] c_perfx[3] c_perfx[4] c_perfx[5] c_perfx[6]
thermo_style custom step lx ly lz xy xz yz c_fx[1] c_fx[2] c_fx[3] c_fx[4] c_fx[5] c_fx[6]
WARNING: New thermo_style command, previous thermo_modify settings will be lost
run 10
Memory usage per processor = 3.38354 Mbytes
Step Lx Ly Lz Xy Xz Yz fx[1] fx[2] fx[3] fx[4] fx[5] fx[6]
5 25.594519 25.594381 25.59438 0 0 0 -23724673 -23883860 -23885828 -18837.532 -68466.96 -61872.751
6 25.594775 25.594381 25.59438 0 0 0 -23724673 -23883860 -23885828 -18837.532 -68466.96 -61872.751
7 25.595031 25.594381 25.59438 0 0 0 -23395545 -23862932 -23864900 -18836.656 -68465.521 -61867.388
8 25.595287 25.594381 25.59438 0 0 0 -23066417 -23842010 -23843978 -18835.782 -68464.082 -61862.025
9 25.595543 25.594381 25.59438 0 0 0 -22737289 -23821093 -23823061 -18834.907 -68462.645 -61856.662
10 25.595799 25.594381 25.59438 0 0 0 -22408162 -23800182 -23802150 -18834.033 -68461.207 -61851.299
11 25.596055 25.594381 25.59438 0 0 0 -22079034 -23779276 -23781244 -18833.16 -68459.769 -61845.937
12 25.596311 25.594381 25.59438 0 0 0 -21749907 -23758375 -23760343 -18832.287 -68458.331 -61840.575
13 25.596567 25.594381 25.59438 0 0 0 -21420780 -23737480 -23739449 -18831.414 -68456.893 -61835.213
14 25.596822 25.594381 25.59438 0 0 0 -21091653 -23716591 -23718559 -18830.541 -68455.455 -61829.852
15 25.597078 25.594381 25.59438 0 0 0 -20762526 -23695707 -23697675 -18829.669 -68454.017 -61824.492
Loop time of 0.438967 on 4 procs for 10 steps with 1296 atoms
Pair time (%) = 0.415694 (94.6982)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0144061 (3.28183)
Outpt time (%) = 0.00844461 (1.92375)
Other time (%) = 0.000422597 (0.0962708)
Nlocal: 324 ave 333 max 319 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Nghost: 4943 ave 4948 max 4934 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 208350 max 199418 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
## strain z, measure s_z: calculates C33
fix 2 all deform 1 z scale 1.0001 remap x
compute perfz all stress/atom pair
compute fz all reduce sum c_perfz[1] c_perfz[2] c_perfz[3] c_perfz[4] c_perfz[5] c_perfz[6]
thermo_style custom step lx ly lz xy xz yz c_fz[1] c_fz[2] c_fz[3] c_fz[4] c_fz[5] c_fz[6]
run 10
Memory usage per processor = 3.8576 Mbytes
Step Lx Ly Lz Xy Xz Yz fz[1] fz[2] fz[3] fz[4] fz[5] fz[6]
15 25.597078 25.594381 25.59438 0 0 0 -20433400 -23674828 -23676797 -18828.796 -68452.579 -61819.131
16 25.597078 25.594381 25.594636 0 0 0 -20433400 -23674828 -23676797 -18828.796 -68452.579 -61819.131
17 25.597078 25.594381 25.594892 0 0 0 -20412525 -23653892 -23347726 -18823.344 -68451.141 -61818.018
18 25.597078 25.594381 25.595148 0 0 0 -20391655 -23632962 -23018656 -18817.892 -68449.702 -61816.905
19 25.597078 25.594381 25.595404 0 0 0 -20370791 -23612037 -22689585 -18812.441 -68448.264 -61815.793
20 25.597078 25.594381 25.59566 0 0 0 -20349932 -23591118 -22360515 -18806.99 -68446.826 -61814.68
21 25.597078 25.594381 25.595916 0 0 0 -20329079 -23570204 -22031445 -18801.538 -68445.388 -61813.567
22 25.597078 25.594381 25.596172 0 0 0 -20308231 -23549295 -21702375 -18796.087 -68443.95 -61812.455
23 25.597078 25.594381 25.596428 0 0 0 -20287389 -23528392 -21373306 -18790.636 -68442.512 -61811.343
24 25.597078 25.594381 25.596683 0 0 0 -20266552 -23507494 -21044236 -18785.185 -68441.074 -61810.231
25 25.597078 25.594381 25.596939 0 0 0 -20245721 -23486602 -20715167 -18779.734 -68439.636 -61809.119
Loop time of 0.438571 on 4 procs for 10 steps with 1296 atoms
Pair time (%) = 0.415724 (94.7906)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0140231 (3.19746)
Outpt time (%) = 0.00841451 (1.91862)
Other time (%) = 0.000409245 (0.0933134)
Nlocal: 324 ave 333 max 319 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Nghost: 4943 ave 4948 max 4934 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 208350 max 199418 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
## strain yz, measure s_yz: calculates C44
fix 2 all deform 1 yz erate 0.0001 remap x
compute perfyz all stress/atom pair
compute fyz all reduce sum c_perfyz[1] c_perfyz[2] c_perfyz[3] c_perfyz[4] c_perfyz[5] c_perfyz[6]
thermo_style custom step lx ly lz xy xz yz c_fyz[1] c_fyz[2] c_fyz[3] c_fyz[4] c_fyz[5] c_fyz[6]
run 10
Memory usage per processor = 4.33166 Mbytes
Step Lx Ly Lz Xy Xz Yz fyz[1] fyz[2] fyz[3] fyz[4] fyz[5] fyz[6]
25 25.597078 25.594381 25.596939 0 0 0 -20224895 -23465716 -20386098 -18774.283 -68438.199 -61808.007
26 25.597078 25.594381 25.596939 0 0 5.1193879e-07 -20224895 -23465716 -20386098 -18774.283 -68438.199 -61808.007
27 25.597078 25.594381 25.596939 0 0 1.0238776e-06 -20224895 -23465716 -20386098 -18774.277 -68438.194 -61543.649
28 25.597078 25.594381 25.596939 0 0 1.5358164e-06 -20224895 -23465716 -20386098 -18774.271 -68438.189 -61279.291
29 25.597078 25.594381 25.596939 0 0 2.0477552e-06 -20224895 -23465716 -20386098 -18774.264 -68438.185 -61014.933
30 25.597078 25.594381 25.596939 0 0 2.5596939e-06 -20224895 -23465716 -20386098 -18774.258 -68438.18 -60750.575
31 25.597078 25.594381 25.596939 0 0 3.0716327e-06 -20224895 -23465716 -20386098 -18774.252 -68438.175 -60486.217
32 25.597078 25.594381 25.596939 0 0 3.5835715e-06 -20224895 -23465716 -20386098 -18774.245 -68438.171 -60221.859
33 25.597078 25.594381 25.596939 0 0 4.0955103e-06 -20224895 -23465716 -20386098 -18774.239 -68438.166 -59957.501
34 25.597078 25.594381 25.596939 0 0 4.6074491e-06 -20224895 -23465716 -20386098 -18774.233 -68438.161 -59693.142
35 25.597078 25.594381 25.596939 0 0 5.1193879e-06 -20224895 -23465716 -20386098 -18774.227 -68438.157 -59428.784
Loop time of 0.438326 on 4 procs for 10 steps with 1296 atoms
Pair time (%) = 0.415411 (94.772)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0141624 (3.23101)
Outpt time (%) = 0.00836039 (1.90734)
Other time (%) = 0.000393033 (0.0896667)
Nlocal: 324 ave 333 max 319 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Nghost: 4943 ave 4948 max 4934 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 208350 max 199418 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0
## strain xy, measure s_xy: calculates C66
fix 2 all deform 1 xy erate 0.0001 remap x
compute perfxy all stress/atom pair
compute fxy all reduce sum c_perfxy[1] c_perfxy[2] c_perfxy[3] c_perfxy[4] c_perfxy[5] c_perfxy[6]
thermo_style custom step lx ly lz xy xz yz c_fxy[1] c_fxy[2] c_fxy[3] c_fxy[4] c_fxy[5] c_fxy[6]
run 10
Memory usage per processor = 4.80572 Mbytes
Step Lx Ly Lz Xy Xz Yz fxy[1] fxy[2] fxy[3] fxy[4] fxy[5] fxy[6]
35 25.597078 25.594381 25.596939 0 0 5.1193879e-06 -20224895 -23465716 -20386098 -18774.22 -68438.152 -59164.426
36 25.597078 25.594381 25.596939 5.1188762e-07 0 5.1193879e-06 -20224895 -23465716 -20386098 -18774.22 -68438.152 -59164.426
37 25.597078 25.594381 25.596939 1.0237752e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -18509.926 -68438.147 -59164.419
38 25.597078 25.594381 25.596939 1.5356628e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -18245.633 -68438.143 -59164.411
39 25.597078 25.594381 25.596939 2.0475505e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -17981.339 -68438.138 -59164.403
40 25.597078 25.594381 25.596939 2.5594381e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -17717.045 -68438.134 -59164.396
41 25.597078 25.594381 25.596939 3.0713257e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -17452.751 -68438.129 -59164.388
42 25.597078 25.594381 25.596939 3.5832133e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -17188.458 -68438.124 -59164.38
43 25.597078 25.594381 25.596939 4.0951009e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -16924.164 -68438.12 -59164.373
44 25.597078 25.594381 25.596939 4.6069885e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -16659.87 -68438.115 -59164.365
45 25.597078 25.594381 25.596939 5.1188762e-06 0 5.1193879e-06 -20224895 -23465716 -20386098 -16395.577 -68438.111 -59164.357
Loop time of 0.438004 on 4 procs for 10 steps with 1296 atoms
Pair time (%) = 0.415312 (94.8193)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0140703 (3.21238)
Outpt time (%) = 0.00822508 (1.87786)
Other time (%) = 0.000396073 (0.0904268)
Nlocal: 324 ave 333 max 319 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Nghost: 4943 ave 4948 max 4934 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 202608 ave 208350 max 199418 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Total # of neighbors = 810432
Ave neighs/atom = 625.333
Neighbor list builds = 0
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# Pure Si crystal, structure created by LAMMPS, qeq off
units metal
atom_style charge
dimension 3
boundary p p p
lattice diamond 5.43
Lattice spacing in x,y,z = 5.43 5.43 5.43
region box block 0 4 0 4 0 4
create_box 1 box
Created orthogonal box = (0 0 0) to (21.72 21.72 21.72)
1 by 1 by 1 processor grid
create_atoms 1 box
Created 512 atoms
mass 1 29.0
pair_style comb
pair_coeff * * ffield.comb Si
neighbor 0.5 bin
neigh_modify every 1 delay 1 check yes
#dump 1 all cfg 10 *.cfg id type xs ys zs q vx vy vz fx fy fz
#dump_modify 1 append yes element Si
fix 1 all nve
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul press vol lx ly lz xz
thermo_modify norm yes
velocity all create 10.1 2398378
thermo 1
run 10
Memory usage per processor = 3.18525 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul Press Volume Lx Ly Lz Xz
0 10.1 -4.6284152 -4.6297182 -4.6297182 0 1140.7851 10246.592 21.72 21.72 21.72 0
1 10.097843 -4.6284152 -4.6297179 -4.6297179 0 1140.8131 10246.592 21.72 21.72 21.72 0
2 10.091376 -4.6284152 -4.6297171 -4.6297171 0 1140.8972 10246.592 21.72 21.72 21.72 0
3 10.080606 -4.6284152 -4.6297157 -4.6297157 0 1141.0373 10246.592 21.72 21.72 21.72 0
4 10.065546 -4.6284152 -4.6297137 -4.6297137 0 1141.233 10246.592 21.72 21.72 21.72 0
5 10.046214 -4.6284152 -4.6297113 -4.6297113 0 1141.4842 10246.592 21.72 21.72 21.72 0
6 10.022634 -4.6284152 -4.6297082 -4.6297082 0 1141.7906 10246.592 21.72 21.72 21.72 0
7 9.9948348 -4.6284152 -4.6297046 -4.6297046 0 1142.1515 10246.592 21.72 21.72 21.72 0
8 9.9628496 -4.6284152 -4.6297005 -4.6297005 0 1142.5666 10246.592 21.72 21.72 21.72 0
9 9.9267173 -4.6284152 -4.6296958 -4.6296958 0 1143.0353 10246.592 21.72 21.72 21.72 0
10 9.8864817 -4.6284152 -4.6296906 -4.6296906 0 1143.5568 10246.592 21.72 21.72 21.72 0
Loop time of 0.449238 on 1 procs for 10 steps with 512 atoms
Pair time (%) = 0.447972 (99.7182)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000600338 (0.133635)
Outpt time (%) = 0.000299215 (0.0666051)
Other time (%) = 0.000366449 (0.0815713)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# Pure Si crystal, structure created by LAMMPS, qeq off
units metal
atom_style charge
dimension 3
boundary p p p
lattice diamond 5.43
Lattice spacing in x,y,z = 5.43 5.43 5.43
region box block 0 4 0 4 0 4
create_box 1 box
Created orthogonal box = (0 0 0) to (21.72 21.72 21.72)
1 by 2 by 2 processor grid
create_atoms 1 box
Created 512 atoms
mass 1 29.0
pair_style comb
pair_coeff * * ffield.comb Si
neighbor 0.5 bin
neigh_modify every 1 delay 1 check yes
#dump 1 all cfg 10 *.cfg id type xs ys zs q vx vy vz fx fy fz
#dump_modify 1 append yes element Si
fix 1 all nve
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul press vol lx ly lz xz
thermo_modify norm yes
velocity all create 10.1 2398378
thermo 1
run 10
Memory usage per processor = 2.33625 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul Press Volume Lx Ly Lz Xz
0 10.1 -4.6284152 -4.6297182 -4.6297182 0 1140.7851 10246.592 21.72 21.72 21.72 0
1 10.097841 -4.6284152 -4.6297179 -4.6297179 0 1140.8134 10246.592 21.72 21.72 21.72 0
2 10.091367 -4.6284152 -4.6297171 -4.6297171 0 1140.8983 10246.592 21.72 21.72 21.72 0
3 10.080586 -4.6284152 -4.6297157 -4.6297157 0 1141.0397 10246.592 21.72 21.72 21.72 0
4 10.065511 -4.6284152 -4.6297137 -4.6297137 0 1141.2373 10246.592 21.72 21.72 21.72 0
5 10.046161 -4.6284152 -4.6297112 -4.6297112 0 1141.4909 10246.592 21.72 21.72 21.72 0
6 10.02256 -4.6284152 -4.6297082 -4.6297082 0 1141.8001 10246.592 21.72 21.72 21.72 0
7 9.9947353 -4.6284152 -4.6297046 -4.6297046 0 1142.1645 10246.592 21.72 21.72 21.72 0
8 9.9627224 -4.6284152 -4.6297005 -4.6297005 0 1142.5835 10246.592 21.72 21.72 21.72 0
9 9.9265602 -4.6284152 -4.6296958 -4.6296958 0 1143.0565 10246.592 21.72 21.72 21.72 0
10 9.8862927 -4.6284152 -4.6296906 -4.6296906 0 1143.5829 10246.592 21.72 21.72 21.72 0
Loop time of 0.118667 on 4 procs for 10 steps with 512 atoms
Pair time (%) = 0.112987 (95.2134)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00507617 (4.27764)
Outpt time (%) = 0.000378549 (0.319)
Other time (%) = 0.000225365 (0.189913)
Nlocal: 128 ave 128 max 128 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Nghost: 3073 ave 3073 max 3073 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 53248 max 53248 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# Pure Si crystal, qeq off, calculates stress-strain, no out.*.cfg
units metal
atom_style charge
dimension 3
boundary p p p
lattice diamond 5.431
Lattice spacing in x,y,z = 5.431 5.431 5.431
region box block 0 4 0 4 0 4
create_box 1 box
Created orthogonal box = (0 0 0) to (21.724 21.724 21.724)
1 by 1 by 1 processor grid
create_atoms 1 box
Created 512 atoms
mass 1 29.0
change_box triclinic
velocity all create 1.0 277387
pair_style comb
pair_coeff * * ffield.comb Si
neighbor 0.5 bin
neigh_modify every 20 delay 0 check no
fix 1 all box/relax aniso 0.0 vmax 0.001
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul #lx ly lz vol pxx pyy pzz
thermo_modify norm yes
thermo 1
minimize 1.0e-14 1.0e-20 1000 10000
WARNING: Resetting reneighboring criteria during minimization
Memory usage per processor = 3.87189 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul
0 1 -4.6295947 -4.6297237 -4.6297237 0
1 1 -4.6295963 -4.6297253 -4.6297253 0
2 1 -4.6295965 -4.6297255 -4.6297255 0
3 1 -4.6295965 -4.6297255 -4.6297255 0
Loop time of 0.768104 on 1 procs for 3 steps with 512 atoms
Minimization stats:
Stopping criterion = linesearch alpha is zero
Energy initial, next-to-last, final =
-4.62972371535 -4.62972550036 -4.62972550036
Force two-norm initial, final = 5.86582 0.235602
Force max component initial, final = 3.38663 0.136025
Final line search alpha, max atom move = 0.000114869 1.5625e-05
Iterations, force evaluations = 3 16
Pair time (%) = 0.763957 (99.46)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0010047 (0.130802)
Outpt time (%) = 7.00951e-05 (0.00912572)
Other time (%) = 0.00307274 (0.400042)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
min_modify dmax 0.2 line quadratic
unfix 1
run 1
WARNING: No fixes defined, atoms won't move
Memory usage per processor = 2.88007 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul
3 1 -4.6295965 -4.6297255 -4.6297255 0
4 1 -4.6295965 -4.6297255 -4.6297255 0
Loop time of 0.0448351 on 1 procs for 1 steps with 512 atoms
Pair time (%) = 0.0447428 (99.7942)
Neigh time (%) = 0 (0)
Comm time (%) = 5.81741e-05 (0.129751)
Outpt time (%) = 1.5974e-05 (0.0356284)
Other time (%) = 1.81198e-05 (0.0404144)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
### copy lines after this to any input script for elastic calculations ###
## Elastic constants calculations: strain box, measure box stress
## strain x, measure s_x, s_y, s_z, s_yz:
## calculates C11, C12, C13 and C14
fix 2 all deform 1 x scale 1.0001 remap x
compute perfx all stress/atom pair
compute fx all reduce sum c_perfx[1] c_perfx[2] c_perfx[3] c_perfx[4] c_perfx[5] c_perfx[6]
thermo_style custom step lx ly lz xy xz yz c_fx[1] c_fx[2] c_fx[3] c_fx[4] c_fx[5] c_fx[6]
WARNING: New thermo_style command, previous thermo_modify settings will be lost
run 10
Memory usage per processor = 3.33784 Mbytes
Step Lx Ly Lz Xy Xz Yz fx[1] fx[2] fx[3] fx[4] fx[5] fx[6]
4 21.728073 21.728073 21.728073 0 0 0 217976.4 217976.4 217976.4 1.9450404e-06 2.4752556e-06 -1.6071587e-06
5 21.728291 21.728073 21.728073 0 0 0 217976.4 217976.4 217976.4 1.8110987e-06 2.6015226e-06 -1.1358357e-06
6 21.728508 21.728073 21.728073 0 0 0 364177.1 295296.39 295296.39 -4.4966424e-06 1.848553e-07 -2.2958737e-06
7 21.728725 21.728073 21.728073 0 0 0 510377.09 372612.85 372612.85 2.4287963e-06 2.6615821e-06 -1.9832618e-06
8 21.728942 21.728073 21.728073 0 0 0 656576.36 449925.76 449925.76 2.4447348e-06 2.4469323e-06 -8.4990897e-07
9 21.72916 21.728073 21.728073 0 0 0 802774.92 527235.13 527235.13 4.0363922e-06 -5.9982754e-06 -2.3201799e-06
10 21.729377 21.728073 21.728073 0 0 0 948972.76 604540.97 604540.97 2.8253812e-06 2.5964234e-06 -8.931554e-07
11 21.729594 21.728073 21.728073 0 0 0 1095169.9 681843.26 681843.26 2.3933505e-06 2.283704e-06 -3.9266049e-07
12 21.729811 21.728073 21.728073 0 0 0 1241366.3 759142.02 759142.02 2.2037259e-06 2.6987214e-06 3.737462e-07
13 21.730029 21.728073 21.728073 0 0 0 1387562 836437.23 836437.23 2.6802555e-06 2.9969439e-06 1.7521287e-07
14 21.730246 21.728073 21.728073 0 0 0 1533757 913728.91 913728.91 4.4634386e-06 -4.2738918e-06 3.2367003e-07
Loop time of 0.48314 on 1 procs for 10 steps with 512 atoms
Pair time (%) = 0.479521 (99.2508)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000623703 (0.129094)
Outpt time (%) = 0.0027349 (0.566067)
Other time (%) = 0.000261068 (0.0540357)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
## strain z, measure s_z: calculates C33
fix 2 all deform 1 z scale 1.0001 remap x
compute perfz all stress/atom pair
compute fz all reduce sum c_perfz[1] c_perfz[2] c_perfz[3] c_perfz[4] c_perfz[5] c_perfz[6]
thermo_style custom step lx ly lz xy xz yz c_fz[1] c_fz[2] c_fz[3] c_fz[4] c_fz[5] c_fz[6]
run 10
Memory usage per processor = 3.7956 Mbytes
Step Lx Ly Lz Xy Xz Yz fz[1] fz[2] fz[3] fz[4] fz[5] fz[6]
14 21.730246 21.728073 21.728073 0 0 0 1679951.2 991017.05 991017.05 1.3848713e-06 1.8198295e-06 -3.1488289e-06
15 21.730246 21.728073 21.728291 0 0 0 1679951.2 991017.05 991017.05 1.4477769e-06 2.1276907e-06 -2.7563351e-06
16 21.730246 21.728073 21.728508 0 0 0 1757243.6 1068312.4 1137190.1 2.1162843e-06 -3.0681281e-06 -1.8698946e-06
17 21.730246 21.728073 21.728725 0 0 0 1834532.4 1145604.2 1283362.4 1.5226892e-06 3.1081802e-06 -2.6821714e-06
18 21.730246 21.728073 21.728942 0 0 0 1911817.6 1222892.5 1429534 -7.5700513e-07 1.7188656e-06 4.1051196e-06
19 21.730246 21.728073 21.72916 0 0 0 1989099.3 1300177.3 1575704.9 -1.4391091e-06 2.0797417e-06 3.9123487e-06
20 21.730246 21.728073 21.729377 0 0 0 2066377.5 1377458.5 1721875.1 -1.5213551e-06 1.9181068e-06 -2.1773741e-06
21 21.730246 21.728073 21.729594 0 0 0 2143652.1 1454736.2 1868044.5 -1.4238005e-06 1.7984361e-06 -2.0333083e-06
22 21.730246 21.728073 21.729811 0 0 0 2220923.2 1532010.3 2014213.3 4.4088785e-06 2.5805071e-06 -2.1480169e-06
23 21.730246 21.728073 21.730029 0 0 0 2298190.7 1609280.9 2160381.3 -9.3407459e-07 2.1740278e-06 -1.3082692e-06
24 21.730246 21.728073 21.730246 0 0 0 2375454.8 1686547.9 2306548.6 -1.7972725e-06 2.108669e-06 -1.6910019e-06
Loop time of 0.48289 on 1 procs for 10 steps with 512 atoms
Pair time (%) = 0.479337 (99.2643)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000632048 (0.130889)
Outpt time (%) = 0.0026505 (0.548883)
Other time (%) = 0.00026989 (0.0558906)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
## strain yz, measure s_yz: calculates C44
fix 2 all deform 1 yz erate 0.0001 remap x
compute perfyz all stress/atom pair
compute fyz all reduce sum c_perfyz[1] c_perfyz[2] c_perfyz[3] c_perfyz[4] c_perfyz[5] c_perfyz[6]
thermo_style custom step lx ly lz xy xz yz c_fyz[1] c_fyz[2] c_fyz[3] c_fyz[4] c_fyz[5] c_fyz[6]
run 10
Memory usage per processor = 4.25336 Mbytes
Step Lx Ly Lz Xy Xz Yz fyz[1] fyz[2] fyz[3] fyz[4] fyz[5] fyz[6]
24 21.730246 21.728073 21.730246 0 0 0 2452715.2 1763811.4 2452715.2 -1.7548117e-06 3.6087566e-06 -3.6198628e-06
25 21.730246 21.728073 21.730246 0 0 4.3460492e-07 2452715.2 1763811.4 2452715.2 -1.7167978e-06 3.4304272e-06 -2.9804569e-06
26 21.730246 21.728073 21.730246 0 0 8.6920984e-07 2452715.2 1763811.4 2452715.2 -1.8729445e-06 4.5840765e-06 243.65136
27 21.730246 21.728073 21.730246 0 0 1.3038148e-06 2452715.2 1763811.4 2452715.2 -1.2316967e-06 2.6286266e-06 487.30276
28 21.730246 21.728073 21.730246 0 0 1.7384197e-06 2452715.2 1763811.4 2452715.2 -1.3251453e-06 2.7225014e-06 730.95419
29 21.730246 21.728073 21.730246 0 0 2.1730246e-06 2452715.2 1763811.4 2452715.2 -8.5464495e-07 -6.3592996e-07 974.60551
30 21.730246 21.728073 21.730246 0 0 2.6076295e-06 2452715.2 1763811.4 2452715.2 -1.7272259e-06 2.0497545e-06 1218.2569
31 21.730246 21.728073 21.730246 0 0 3.0422344e-06 2452715.2 1763811.4 2452715.2 -4.6626464e-07 2.1955509e-06 1461.9083
32 21.730246 21.728073 21.730246 0 0 3.4768394e-06 2452715.2 1763811.4 2452715.2 -1.1296433e-06 2.2397275e-06 1705.5598
33 21.730246 21.728073 21.730246 0 0 3.9114443e-06 2452715.2 1763811.4 2452715.2 -1.388603e-06 1.2425658e-06 1949.2111
34 21.730246 21.728073 21.730246 0 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 -1.1793341e-06 1.7092936e-06 2192.8625
Loop time of 0.483123 on 1 procs for 10 steps with 512 atoms
Pair time (%) = 0.479436 (99.2368)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000645638 (0.133638)
Outpt time (%) = 0.00276113 (0.571516)
Other time (%) = 0.00028038 (0.058035)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
## strain xy, measure s_xy: calculates C66
fix 2 all deform 1 xy erate 0.0001 remap x
compute perfxy all stress/atom pair
compute fxy all reduce sum c_perfxy[1] c_perfxy[2] c_perfxy[3] c_perfxy[4] c_perfxy[5] c_perfxy[6]
thermo_style custom step lx ly lz xy xz yz c_fxy[1] c_fxy[2] c_fxy[3] c_fxy[4] c_fxy[5] c_fxy[6]
run 10
Memory usage per processor = 4.71113 Mbytes
Step Lx Ly Lz Xy Xz Yz fxy[1] fxy[2] fxy[3] fxy[4] fxy[5] fxy[6]
34 21.730246 21.728073 21.730246 0 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 -1.7294679e-06 4.8293026e-06 2436.5139
35 21.730246 21.728073 21.730246 4.3456146e-07 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 -1.4630595e-06 4.5052213e-06 2436.5139
36 21.730246 21.728073 21.730246 8.6912293e-07 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 243.63758 -0.00012576585 2436.5139
37 21.730246 21.728073 21.730246 1.3036844e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 487.27522 -0.00025542614 2436.5139
38 21.730246 21.728073 21.730246 1.7382459e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 730.91286 -0.00038565598 2436.5139
39 21.730246 21.728073 21.730246 2.1728073e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 974.55045 -0.00051669611 2436.5138
40 21.730246 21.728073 21.730246 2.6073688e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1218.188 -0.00064706412 2436.5139
41 21.730246 21.728073 21.730246 3.0419303e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1461.8257 -0.0007779958 2436.5139
42 21.730246 21.728073 21.730246 3.4764917e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1705.4633 -0.00090716273 2436.5138
43 21.730246 21.728073 21.730246 3.9110532e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1949.1009 -0.001038008 2436.5138
44 21.730246 21.728073 21.730246 4.3456146e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 2192.7385 -0.0011663311 2436.5138
Loop time of 0.484576 on 1 procs for 10 steps with 512 atoms
Pair time (%) = 0.480966 (99.255)
Neigh time (%) = 0 (0)
Comm time (%) = 0.000598431 (0.123496)
Outpt time (%) = 0.00274968 (0.567441)
Other time (%) = 0.000261784 (0.0540232)
Nlocal: 512 ave 512 max 512 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 4861 ave 4861 max 4861 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
FullNghs: 212992 ave 212992 max 212992 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# Pure Si crystal, qeq off, calculates stress-strain, no out.*.cfg
units metal
atom_style charge
dimension 3
boundary p p p
lattice diamond 5.431
Lattice spacing in x,y,z = 5.431 5.431 5.431
region box block 0 4 0 4 0 4
create_box 1 box
Created orthogonal box = (0 0 0) to (21.724 21.724 21.724)
1 by 2 by 2 processor grid
create_atoms 1 box
Created 512 atoms
mass 1 29.0
change_box triclinic
velocity all create 1.0 277387
pair_style comb
pair_coeff * * ffield.comb Si
neighbor 0.5 bin
neigh_modify every 20 delay 0 check no
fix 1 all box/relax aniso 0.0 vmax 0.001
timestep 0.00020
thermo_style custom step temp etotal pe evdwl ecoul #lx ly lz vol pxx pyy pzz
thermo_modify norm yes
thermo 1
minimize 1.0e-14 1.0e-20 1000 10000
WARNING: Resetting reneighboring criteria during minimization
Memory usage per processor = 3.02671 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul
0 1 -4.6295947 -4.6297237 -4.6297237 0
1 1 -4.6295963 -4.6297253 -4.6297253 0
2 1 -4.6295965 -4.6297255 -4.6297255 0
3 1 -4.6295965 -4.6297255 -4.6297255 0
Loop time of 0.250542 on 4 procs for 3 steps with 512 atoms
Minimization stats:
Stopping criterion = linesearch alpha is zero
Energy initial, next-to-last, final =
-4.62972371535 -4.62972550036 -4.62972550036
Force two-norm initial, final = 5.86582 0.235602
Force max component initial, final = 3.38663 0.136025
Final line search alpha, max atom move = 0.000114869 1.5625e-05
Iterations, force evaluations = 3 16
Pair time (%) = 0.191762 (76.5388)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0565124 (22.556)
Outpt time (%) = 5.87702e-05 (0.0234572)
Other time (%) = 0.00220919 (0.881761)
Nlocal: 128 ave 164 max 100 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Nghost: 3073 ave 3101 max 3037 min
Histogram: 1 0 0 0 0 0 2 0 0 1
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 68224 max 41600 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
min_modify dmax 0.2 line quadratic
unfix 1
run 1
WARNING: No fixes defined, atoms won't move
Memory usage per processor = 2.03489 Mbytes
Step Temp TotEng PotEng E_vdwl E_coul
3 1 -4.6295965 -4.6297255 -4.6297255 0
4 1 -4.6295965 -4.6297255 -4.6297255 0
Loop time of 0.0146563 on 4 procs for 1 steps with 512 atoms
Pair time (%) = 0.01146 (78.1916)
Neigh time (%) = 0 (0)
Comm time (%) = 0.00314051 (21.4277)
Outpt time (%) = 3.39746e-05 (0.231809)
Other time (%) = 2.18153e-05 (0.148846)
Nlocal: 128 ave 164 max 100 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Nghost: 3073 ave 3101 max 3037 min
Histogram: 1 0 0 0 0 0 2 0 0 1
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 68224 max 41600 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
### copy lines after this to any input script for elastic calculations ###
## Elastic constants calculations: strain box, measure box stress
## strain x, measure s_x, s_y, s_z, s_yz:
## calculates C11, C12, C13 and C14
fix 2 all deform 1 x scale 1.0001 remap x
compute perfx all stress/atom pair
compute fx all reduce sum c_perfx[1] c_perfx[2] c_perfx[3] c_perfx[4] c_perfx[5] c_perfx[6]
thermo_style custom step lx ly lz xy xz yz c_fx[1] c_fx[2] c_fx[3] c_fx[4] c_fx[5] c_fx[6]
WARNING: New thermo_style command, previous thermo_modify settings will be lost
run 10
Memory usage per processor = 2.49265 Mbytes
Step Lx Ly Lz Xy Xz Yz fx[1] fx[2] fx[3] fx[4] fx[5] fx[6]
4 21.728073 21.728073 21.728073 0 0 0 217976.4 217976.4 217976.4 -5.331517e-06 3.0239293e-06 -4.7684649e-06
5 21.728291 21.728073 21.728073 0 0 0 217976.4 217976.4 217976.4 -4.2797025e-06 2.0730342e-06 -3.2414474e-06
6 21.728508 21.728073 21.728073 0 0 0 364177.1 295296.39 295296.39 6.7462199e-07 1.6210516e-06 -2.8184106e-06
7 21.728725 21.728073 21.728073 0 0 0 510377.09 372612.85 372612.85 -3.9337607e-06 2.4599063e-06 -4.2531358e-06
8 21.728942 21.728073 21.728073 0 0 0 656576.36 449925.76 449925.76 -3.6805931e-06 3.0030584e-06 -2.6648247e-06
9 21.72916 21.728073 21.728073 0 0 0 802774.92 527235.13 527235.13 1.0867248e-05 -8.1694237e-06 -1.7161938e-06
10 21.729377 21.728073 21.728073 0 0 0 948972.76 604540.97 604540.97 -3.2850644e-06 1.3204575e-06 -1.5057612e-06
11 21.729594 21.728073 21.728073 0 0 0 1095169.9 681843.26 681843.26 -3.6006336e-06 2.4158409e-06 -2.7959314e-06
12 21.729811 21.728073 21.728073 0 0 0 1241366.3 759142.02 759142.02 -3.3313125e-06 1.4697892e-06 -2.7046099e-06
13 21.730029 21.728073 21.728073 0 0 0 1387562 836437.23 836437.23 -4.1963855e-06 1.8017491e-06 -2.3957259e-06
14 21.730246 21.728073 21.728073 0 0 0 1533757 913728.91 913728.91 8.2405636e-06 -9.2080568e-06 -2.6979061e-06
Loop time of 0.162016 on 4 procs for 10 steps with 512 atoms
Pair time (%) = 0.123017 (75.9293)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0340899 (21.0411)
Outpt time (%) = 0.00473952 (2.92535)
Other time (%) = 0.000169039 (0.104335)
Nlocal: 128 ave 164 max 100 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Nghost: 3073 ave 3101 max 3037 min
Histogram: 1 0 0 0 0 0 2 0 0 1
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 68224 max 41600 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
## strain z, measure s_z: calculates C33
fix 2 all deform 1 z scale 1.0001 remap x
compute perfz all stress/atom pair
compute fz all reduce sum c_perfz[1] c_perfz[2] c_perfz[3] c_perfz[4] c_perfz[5] c_perfz[6]
thermo_style custom step lx ly lz xy xz yz c_fz[1] c_fz[2] c_fz[3] c_fz[4] c_fz[5] c_fz[6]
run 10
Memory usage per processor = 2.95041 Mbytes
Step Lx Ly Lz Xy Xz Yz fz[1] fz[2] fz[3] fz[4] fz[5] fz[6]
14 21.730246 21.728073 21.728073 0 0 0 1679951.2 991017.05 991017.05 -4.8604756e-06 3.7251477e-06 -2.9550019e-06
15 21.730246 21.728073 21.728291 0 0 0 1679951.2 991017.05 991017.05 -3.8939866e-06 2.9223391e-06 -2.2819697e-06
16 21.730246 21.728073 21.728508 0 0 0 1757243.6 1068312.4 1137190.1 -3.6671782e-06 -3.9050298e-06 -2.216407e-06
17 21.730246 21.728073 21.728725 0 0 0 1834532.4 1145604.2 1283362.4 -3.9258267e-06 2.221206e-06 -2.1819285e-06
18 21.730246 21.728073 21.728942 0 0 0 1911817.6 1222892.5 1429534 -3.1570557e-06 8.2160424e-07 4.7018758e-06
19 21.730246 21.728073 21.72916 0 0 0 1989099.3 1300177.3 1575704.9 -3.572314e-06 1.2809206e-06 4.3456208e-06
20 21.730246 21.728073 21.729377 0 0 0 2066377.5 1377458.5 1721875.1 -2.6839761e-06 1.8703615e-06 -2.1448559e-06
21 21.730246 21.728073 21.729594 0 0 0 2143652.1 1454736.2 1868044.5 -2.7199703e-06 1.6784208e-06 -2.426873e-06
22 21.730246 21.728073 21.729811 0 0 0 2220923.2 1532010.3 2014213.3 -2.5654468e-06 2.0648963e-06 -1.6998995e-06
23 21.730246 21.728073 21.730029 0 0 0 2298190.7 1609280.9 2160381.3 -3.3044419e-06 2.6103683e-06 -2.5246759e-06
24 21.730246 21.728073 21.730246 0 0 0 2375454.8 1686547.9 2306548.6 -3.5025824e-06 1.2024729e-06 -1.5524318e-06
Loop time of 0.161845 on 4 procs for 10 steps with 512 atoms
Pair time (%) = 0.122915 (75.946)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0340765 (21.055)
Outpt time (%) = 0.00468802 (2.89661)
Other time (%) = 0.000165582 (0.102309)
Nlocal: 128 ave 164 max 100 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Nghost: 3073 ave 3101 max 3037 min
Histogram: 1 0 0 0 0 0 2 0 0 1
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 68224 max 41600 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
## strain yz, measure s_yz: calculates C44
fix 2 all deform 1 yz erate 0.0001 remap x
compute perfyz all stress/atom pair
compute fyz all reduce sum c_perfyz[1] c_perfyz[2] c_perfyz[3] c_perfyz[4] c_perfyz[5] c_perfyz[6]
thermo_style custom step lx ly lz xy xz yz c_fyz[1] c_fyz[2] c_fyz[3] c_fyz[4] c_fyz[5] c_fyz[6]
run 10
Memory usage per processor = 3.40818 Mbytes
Step Lx Ly Lz Xy Xz Yz fyz[1] fyz[2] fyz[3] fyz[4] fyz[5] fyz[6]
24 21.730246 21.728073 21.730246 0 0 0 2452715.2 1763811.4 2452715.2 -2.4048644e-06 3.3513607e-06 -2.8722185e-06
25 21.730246 21.728073 21.730246 0 0 4.3460492e-07 2452715.2 1763811.4 2452715.2 -2.481322e-06 3.6480379e-06 -3.1092437e-06
26 21.730246 21.728073 21.730246 0 0 8.6920984e-07 2452715.2 1763811.4 2452715.2 -3.0751506e-06 5.8376744e-06 243.65136
27 21.730246 21.728073 21.730246 0 0 1.3038148e-06 2452715.2 1763811.4 2452715.2 -2.7247323e-06 2.3340173e-06 487.30277
28 21.730246 21.728073 21.730246 0 0 1.7384197e-06 2452715.2 1763811.4 2452715.2 -2.8719517e-06 4.5249397e-06 730.95419
29 21.730246 21.728073 21.730246 0 0 2.1730246e-06 2452715.2 1763811.4 2452715.2 -2.6310243e-06 -6.3464035e-07 974.60551
30 21.730246 21.728073 21.730246 0 0 2.6076295e-06 2452715.2 1763811.4 2452715.2 -2.5635976e-06 3.5771871e-06 1218.2569
31 21.730246 21.728073 21.730246 0 0 3.0422344e-06 2452715.2 1763811.4 2452715.2 -3.2260573e-06 2.5233788e-06 1461.9083
32 21.730246 21.728073 21.730246 0 0 3.4768394e-06 2452715.2 1763811.4 2452715.2 -3.0611909e-06 3.1329051e-06 1705.5598
33 21.730246 21.728073 21.730246 0 0 3.9114443e-06 2452715.2 1763811.4 2452715.2 -2.6095826e-06 1.3805022e-06 1949.2111
34 21.730246 21.728073 21.730246 0 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 -2.8236839e-06 1.8352159e-06 2192.8625
Loop time of 0.161851 on 4 procs for 10 steps with 512 atoms
Pair time (%) = 0.122992 (75.9912)
Neigh time (%) = 0 (0)
Comm time (%) = 0.0339996 (21.0068)
Outpt time (%) = 0.00469309 (2.89964)
Other time (%) = 0.000165641 (0.102342)
Nlocal: 128 ave 164 max 100 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Nghost: 3073 ave 3101 max 3037 min
Histogram: 1 0 0 0 0 0 2 0 0 1
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 68224 max 41600 min
Histogram: 1 0 0 2 0 0 0 0 0 1
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0
## strain xy, measure s_xy: calculates C66
fix 2 all deform 1 xy erate 0.0001 remap x
compute perfxy all stress/atom pair
compute fxy all reduce sum c_perfxy[1] c_perfxy[2] c_perfxy[3] c_perfxy[4] c_perfxy[5] c_perfxy[6]
thermo_style custom step lx ly lz xy xz yz c_fxy[1] c_fxy[2] c_fxy[3] c_fxy[4] c_fxy[5] c_fxy[6]
run 10
Memory usage per processor = 3.86594 Mbytes
Step Lx Ly Lz Xy Xz Yz fxy[1] fxy[2] fxy[3] fxy[4] fxy[5] fxy[6]
34 21.730246 21.728073 21.730246 0 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 -2.4937771e-06 4.8352356e-06 2436.5139
35 21.730246 21.728073 21.730246 4.3456146e-07 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 -2.6268441e-06 5.4186954e-06 2436.5139
36 21.730246 21.728073 21.730246 8.6912293e-07 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 243.63758 -0.00012459169 2436.5139
37 21.730246 21.728073 21.730246 1.3036844e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 487.27522 -0.00025416174 2436.5139
38 21.730246 21.728073 21.730246 1.7382459e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 730.91286 -0.00038484627 2436.5139
39 21.730246 21.728073 21.730246 2.1728073e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 974.55045 -0.00051633193 2436.5138
40 21.730246 21.728073 21.730246 2.6073688e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1218.188 -0.00064696028 2436.5138
41 21.730246 21.728073 21.730246 3.0419303e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1461.8257 -0.00077648633 2436.5139
42 21.730246 21.728073 21.730246 3.4764917e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1705.4633 -0.00090632398 2436.5138
43 21.730246 21.728073 21.730246 3.9110532e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 1949.1009 -0.0010366567 2436.5138
44 21.730246 21.728073 21.730246 4.3456146e-06 0 4.3460492e-06 2452715.2 1763811.4 2452715.2 2192.7385 -0.0011656542 2436.5138
Loop time of 0.150393 on 4 procs for 10 steps with 512 atoms
Pair time (%) = 0.123172 (81.9005)
Neigh time (%) = 0 (0)
Comm time (%) = 0.022368 (14.8731)
Outpt time (%) = 0.0046854 (3.11545)
Other time (%) = 0.000166953 (0.111011)
Nlocal: 128 ave 152 max 112 min
Histogram: 2 0 0 0 0 0 1 0 0 1
Nghost: 3073 ave 3089 max 3049 min
Histogram: 1 0 0 0 1 0 0 0 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
FullNghs: 53248 ave 63232 max 46592 min
Histogram: 2 0 0 0 0 0 1 0 0 1
Total # of neighbors = 212992
Ave neighs/atom = 416
Neighbor list builds = 0
Dangerous builds = 0